<template>
    <div class="login_container">
        <div class="login_box">
            <!-- 头像区域 -->
            <div class="avatar_box">
                <img src="../assets/logo.png" alt="">
            </div>
            <!-- 登录表单区域 -->
            <el-form ref= loginFormRef :model="loginForm" :rules="loginFormRules" label-width="0px" class="login_form">
              <!-- 用户名 -->
              <el-form-item prop="username">
                <el-input v-model="loginForm.username" prefix-icon="el-icon-user-solid"></el-input>
              </el-form-item>
              <!-- 密码 -->
              <el-form-item prop="password">
                <el-input v-model="loginForm.password" prefix-icon="el-icon-lock" type="password"></el-input>
              </el-form-item>
              <!-- 按钮区域 -->
              <!-- 登录按钮 -->
              <el-form-item class="btns">
                <el-button type="primary" @click="login">登录</el-button>
                <el-button type="info" @click="resetloginForm">重置</el-button>
              </el-form-item>
              <!-- 重置按钮 -->
            </el-form>
        </div>
    </div>
</template>

<script>
export default {
  data() {
    return {
      //登录表单的数据绑定对象
      loginForm:{
        username:'admin',
        password:'123456'
      },
      // 表单验证规则对象
      loginFormRules:{
        // 验证用户名合法性
        username:[
          {required: true, message: '请输入登录名称', trigger: 'blur'},
          { min: 3, max: 5, message: '长度在 3 到 5 个字符', trigger: 'blur' }
        ],
        // 验证密码
        password:[
          {required: true, message: '请输入密码', trigger: 'blur'},
          { min: 3, message: '长度在 3个字符以上', trigger: 'blur' }
        ]
      }
    }
  },
  methods:{
    // 重置按钮事件 重置登录表单
    resetloginForm(){
      this.$refs.loginFormRef.resetFields();
    },
    login(){
      this.$refs.loginFormRef.validate(async valid =>{
        if (!valid) return;
        const {data:res} = await this.$http.post('login',this.loginForm);
        if (res.meta.status !== 200) return this.$message.error('登录失败');
        this.$message.success('登录成功')
        window.sessionStorage.setItem("token",res.data.token);
        this.$router.push('/home');
      })
    }
  }
}
</script>

<style lang="less" scoped>
.login_container {
  background-color: #2b4b6b;
  height: 100%;
  // 头像区域
  .login_box {
    width: 450px;
    height: 300px;
    background-color: #fff;
    border-radius: 3px;
    position: absolute;
    left: 50%;
    top: 30%;
    transform: translate(-50%);
    //头像节点
    .avatar_box {
      height: 130px;
      width: 130px;
      border: solid 1px #eee;
      border-radius: 50%;
      padding: 10px;
      box-shadow: 0 0 10px #ddd;
      position: absolute;
      left: 50%;
      transform: translate(-50%, -50%);
      background-color: #fff;
      //头像图片
      img {
        width: 100%;
        height: 100%;
        border-radius: 50%;
        background-color: #eee;
      }
    }
  }
}
.login_form{
  position: absolute;
  bottom: 0;
  width: 100%;
  padding: 0 10px;
  box-sizing: border-box;

}
.btns{
  display: flex;
  justify-content: flex-end;


}
</style>
